The direct answer to your question is that neither an Adventist Pastor nor any of the Apostles have or had the power to forgive sin.
Seventh-day Adventists in common with most Protestant faiths do not practice auricular confession. To God alone is given the right to hear confession and to forgive sin. He is the Great Lawgiver and as David said, "Against you, you only, have I sinned" after his dual sins of adultery and murder. I could add a note about the day of Pentecost but I would but paraphrase John Wycliffe of Oxford University who was the morning star of the Protestant Reformation and renounced the Catholic practice in the 14th Century. In extract he wrote:
"It is not confession to man but to God, who is the true Priest of souls, that is the great need of sinful man. Private confession and the whole system of medieval confession was not ordered by Christ and was not used by the Apostles, for of the three thousand who were turned to Christ's Law on the Day of Pentecost, not one of them was confessed to a priest.... It is God who is the forgiver."
"Faith in our Lord Jesus Christ is sufficient for salvation, and that without faith it is impossible to please God, that the merit of Christ is able, by itself, to redeem all mankind from hell, and that this sufficiency is to be understood without any other cause concurring."
"Trust wholly in Christ, rely altogether on His suffering, beware of seeking to be justified in any other way than by His righteousness. Faith in our Lord Jesus Christ is sufficient for salvation."
"There is no greater heresy for a man than to believe that he is absolved from sin if he gives money, or because a priest lays his hand on his head and says, 'I absolve you;' for you must be sorrowful in your heart, else God does not absolve you."
As you can see it was he who first preached the great Protestant message, 'Justification by Faith and by Faith Alone' which in it's essence is a repudiation of auricular confession.
God's Generals - The Roaring Reformers
Tracts and Treatises of John de Wycliffe